Extensible pressure bailer



.lune 15, 1937. .5.' D. KEELER 2,083,714

` EXTESIBLE PRESSURE BAILER Filed Jan. 8, 1934 3 Sheets-Sheet 1nr'rozM/fx June l5, 1937. E. D. KEELER EXTENSIBLE PRESSURE BAIDER FiledJan. 8, 1934 3 Sheets-Shed. 2

.ZWVf/V TOR [D6/Wl?l A264572.

June l5, 1937.

E. D. KEELE'R EXTENSIBLE PRESSURE BAILER Filed Jan. 8, 1954 3Sheets-Sheet 3 R. 0 W m J m M .i

Patented June 15, 19.37

' UNITED STATES PATENT OFFICE 2,083,714 EXTENSIBLE PRESSURE BAILER Edgarn. Keeler, Long Beach, Calif. Application January 8, 1934, Serial No.705,753

24 claims. (ci. 16e-19) This invention relates to an extensible pressurebailer, i. e., one in which the hydrostatic pressure of fluid in a wellis used to force sand or the like. into a chamber in the bailer upon the5 opening of a pressure chamber.

An object of my invention is to provide a pressure bailer comprising twotelescopic tubes, the

upper tube being movable upwardly and thereupon opening a valve in theupper or pressure 10 chamber.

Another object is to provide a bailer of the 25 In the drawing Figure 1is a'longitudinal, sectional view -of my bailer in extended position.

Figure 2 is a longitudinal, sectional view of my bailer in collapsedposition.

Figure 3 is a longitudinal, sectional view of. a releasing bottom whichmay be attached to my bailer.

Figure 4 is a sectional view taken on line 4,4, of Fig. 3.

Figure 5 is a fragmentary, longitudinal, sectional view of the upperpart of my bailer when used on drill pipe.

Figure 6 is a side elevation of the upper collar,

as used in connection with drill pipe. 40 Figure 'l is a. longitudinal,sectional view of a modified form of bailer.

Referring more particularly to the drawings, my bailer comprises a loweror sand chamber I, and an upper or pressure chamber 2.

The pressure chamber is movable upwardly rel- Y ative to the lowerchamber when the bailer vis operated, as will be further described.

The lower chamber I consists of a casing 3, adjacent the lower end ofwhich a sub 4 is at- 50 tached. 'I'his sub has a central passage 5 and aspider B across the lower end of the passage 5.

' A valve is mounted in the spider 6, and consists of a conical valvehead I and a stem 8 extending thru the spider. A spring 3 encircles thestem 55 and normally urges the valve head 'I upwardly.

gel'S A nut I screws onto the lower end of the stem 8 so as to limit theupward movement of the valve. A tubular catch II screws into the upperend of the sub 4 and is provided with spring fin- I2 on the top thereof.

The upper chamber 2 consists of a section of tubing`|3 which extendsthru a packing gland I4 on the top of the casing 3. The tube is closedat the top by a cap I from which a pin I6 extends. The constructionshown in Figs. 1 and 2 is used in connection with a cable.

A sleeve Il depends from the tube I3 and extends into the chamber I. Thelower end of this sleeve is provided with a valve seat I8 which fitsagainst the conical valve head 1, as shown in Fig. 2.

An annular boss I9 is formed on the sleeve I'l and is adapted to fitwithin the fingers I2 and to be heldby said fingers. The fingers I2 willgrip the boss I9 sufliciently so that in normal operation of running thetool into the hole, the boss will be in collapsed position, as shown inFig. 2. Thus, the pressure within the chamber 2 will be at atmosphericpressure, whereas the vpressure within the chamber I'will be underwhatever pressure exists in the well.

AWhen the point has been reached where it is desired to bail the well, asharp upward pull on the cable or tube will release the boss I9 from thefingers I2, and the tubing I3 will slide upwardly. Due to the differencein pressure between the well and the chamber 2, there will be a suddeninrush of fluid, sand, and the like, into the chamber I. The fluidmaterial passes into the chamber I thru the spider 6 and the passage 5while the sand remains in thel lower part of the casing 3 below the sub4.

A block is mounted on the sub 4 and is positioned below said sub. Thisblock has a plurality of vertical ports 2l extending therethru. Theseports permit',` thefluid to pass upwardly into the chamber I, while thesand remains below the block. y

A relief valve 22 is provided in the block 20, for the purpose ofrelieving any excess pressure in the chamber I, as the bailerisbeingpulled out of the well. This relief valve is preferably of the ballcheck type which exhausts thru a side port 23.

A bailer bottom 24 of a suitable length is attached to the block 20, andmay be of the usual and well known type or a bottom as disclosed in Fig.6 of my Patent No. 1,944,434, issued January 23, 1934, or it may be ofthe type shown in Fig. 3. The bailer bottom illustrated in Fig. 3consists o'f an outer shell 25 in which are positioned a packing gland26 and a valve chamber 21. 'Ihe packing gland and valve chamber are inspaced relation, as is evident from Fig. 3. The shell 25 screws onto theblock 20 to form the complete bailer.

A tube 28 extends thru the packing gland 26 and screws into the valvechamber 21. A valve 29 is positioned in a bore 30'which communicateswith the tube 28. The bore 38 extends to a transverse port 3| whichlatter port also serves as a means to unseat the valve 29.

A pin 32 depends from 'the valve 29 and projects into the port 3I. Atool is inserted in the port andthe valve 29 is raised off its seat inorder to release the fluid and other materials which are trapped withinthe chamber I.

An upper and lower set of leather or rubber packing rings 33,'34 ispositioned on the outer shell 25 adjacent the lower end thereof. These 4rings are positioned one on either side of the completely fill the same.

transverse port 3l so that fluid from the well cannot enter this port.Fluid can, however, pass upwardly thru ducts 35 in the valve chamber 21and thence thru side ports 36 in the shell 25. The ports 35 arepositioned above the cups 33.

In Figs. and 6, I have illustrated a coupling for drill pipe, or tubing.The tubing I3 threads into a collar 31 which collar, in turn, screwsinto a box 38 to which the drill pipe or tubing is attached. A pin 39projects from the coupling 31 into a bayonet slot 40 in the packinggland I4. Left-hand rotation of the drill pipe will release the pin 39from the slot 40, and thus permit the bailer to be extended in order tooperate the same.

If desired, a ball check valve 4I can be provided in the coupling 31 sothat the bailer can be operated somewhat like a pump, in order to createa suction in the chamber I after the valve 1 has been unseated. Ifnecessary, a set of jars (not shown) can be placed above my bailer inorder to release the boss I9 from the spring ngers I2.

The ball check valve 4I is used only in connection with drill pipe ortubing and with the bailer bottom shown in Fig. 3. The tubing I3 of thebailer can be reciprocated and acts as a pump to pull fluid and sandinto the bailer if the rst inrush of material is not suilicient to Thisarrangement will also be advantageous where there is a low fluid levelin the well or if, for any other reason, the material does not iiowquickly and freely into the bailer. K

When used on drill pipe or tubing X, circulation can be maintained thrumy bailer, since there is a clear passage thru the bailer and out of thebottom thereof, as shown in Figure '1. It is to be understood that thearrangement shown in Figure 7 is only used in connection with drill pipeor tubing which screws into the sub Y at the top of the bailer. Thegeneral arrangement of my bailer is substantially the same as shown inFigures 1 and 2, but preferably with the pin-locking arrangement, asshown in Figure 5 and Figure 6. The spring fingers are eliminated andthe pin 39 and slot 40 are used to hold the bailer in collapsed positionwith the valve seated against the bottom ofthe pressure chamber.

A circulation pipe 42 extends longitudinally thru the bailer, and isslidably mounted at the lower end in the 4spider 6. Nuts 43 screw ontothe bottom of the circulation pipe so that the upward movement thereofis limited.

A valve head 44 is attached or formed on the pipe 42 above the lower endthereof. 'I'his valve head seats against the bottom of the sleeve 45which depends from the tubing I3. The pipe 42 extends thru a packinggland 46 in the upper sub 41. The pipe 42 extends upwardly a sufiicientdistance so that the longitudinal movementof the tubing I3 isnot'hindered, and the pipe will not pass out of the gland 46 on upwardmovement of the tubing I3. 'I'he sleeve 45 is moved away from the valvehead 44 in the same manner, as previously described.

It will be evident that in this circulating arrangement, the uid isconducted thru the pressure chamber and thence downwardly and out of thebottom of the bailer. The packing gland 46 prevents the fluid frompassing into the pressure chamber within the tubing I3.

If desired, a relief valve, similar to the valve 23, can be providedadjacent the upper end of the lower chamber I, i. e., in the lower partof the packing gland I4.

The operation of my bailer will be evident from the foregoingdescription. It will also be evident that my bailer can be operated offof bottom, i. e., it is not necessary to have the bailer strike anobstruction in the well or the bottom of the well in order to operatethe same. If my bailer should strike an obstruction, such as a collar,or the like, in a well, it will not be tripped. The bailer can be liftedand again lowered so as to avoid the obstruction, without withdrawingthe bailer from the well and resetting it.

Having described my invention, I claim:

1. A iiuid pressure bailer comprising a lower casing, an upper tubingtelescopically mounted in the casing, said casing and tube each havingchambers therein, valve means seated in the lower end of the tubing,mounting means for the valve in the casing, means releasably engagingthe tubing whereby it is held in lowered position and with said tubingbeing adapted to be disengaged from the releasable means, and the valveopened whereby a charge is taken into the casing on relative upwardmovement of the tubing and valve, said casing having an intake at thebottom thereof.

2. A iiuid pressure bailer comprising a lower casing having a sandchamber therein, an upper tubing having a pressure chamber therein, saidtubing being telescopically mounted in the casing, a valve engaging thelower end of the tubing, mounting means for the valve in the casing, ameans releasably engaging the tubing whereby said tubing is held inlowered position with the valve closed.

3. A iiuid pressure bailer comprising a lower casing having a sandchamber therein, an upper tubing having a pressure chamber therein, saidtubing being telescopically mounted in the casing, a valve engaging thelower end of the tubing, mounting means for the valve in the casing, ameans releasably engaging the tubing whereby said tubing is held inlowered position with the valve closed, and a relief valve in thecasing.

4. -A bailer comprising a lower casing having a sand chamber therein,`an upper tubing having valve closing the tube, said` a pressure chambertherein, said tubing being ing the sleeve whereby the tubing is held inlowered position and with the valve seated in the sleeve.

5. A bailer comprising a lower casing having a sand chamber therein, anupper tubing ,having a pressure chamber therein, said tubing beingtelescopically mounted in the casing, a sleeve depending from 'thetubing, bottom of the sleeve, mounting means for 'the valve in thecasing, means releasably engaging the sleeve whereby the tubing is heldin lowered psition and with the valve seated in the sleeve, said meanscomprising spring fingers and a boss on the sleeve engageable with saidfingers.

6. A bailer comprising a lower casing having a sand chamber. therein, anupper tubing having a pressure chamber therein, said tubing beingtelescopically mounted in the casing, a sleeve depending from thetubing, a valve yieldably mounted in the casing, a valve seat in thesleeve against which the valve is pressed, and releasable means engagingthe sleeve whereby the tubing is held in lowered position, and with thevalve seated. f

7. A fluid pressure bailer comprising a casing having a sand chambertherein, a tube Vhaving a pressure chamber therein, said tube beingtelescopically mounted in the casing, a valve in the casing, a seat inthe tube, said valve resting against the seat in lowered position of thetube, re-

leasable means engaging the tube whereby said seat is held against thevalve, said tube being movable upwardly on release of said means wherebythe valve is unseated.

8. A bailer comprising a casing, a packing gland on top of the casing, atubing slidably mounted thru the packing gland, said casing having asand chamber therein and said tubing having a pressure chamber therein,a sub on the lower end of the casing, a valve yieldably mounted in thesub, a sleeve depending from the tubing, spring fingers on the sub, aboss on the sleevel engageable by the spring fingers whereby the tubingis releasably heldin lowered position, a seat in the sleeve upon whichthe valve rests, said 'pressure chamber being opened on upward movemento1' the tubing.

9. A bailer comprising a casing, a packing gland on top of the casing, atubing slidably mounted thru the packing gland, said casing having asand chamber therein and said tubing having a pressure chamber therein,a sub on the lower end of the casing, a valve yieldably mounted in thesub, a sleeve depending from the tubing, spring fingers on the sub, aboss on the sleeve engageable by the spring fingers whereby the 'tubingis releasably held in lowered position, a seat in the sleeve upon whichthe valve rests, said pressure chamber being opened on upward movementof the tubing, and a relief valve in the sub.

10. A bailer comprising a casing and a. tubing telescopically mounted inthe casing, said casing and tubing each having chambers therein, valvemeans adapted toengage and close the tubing, mounting means in thecasing for the valve means, means releasably engaging the tubing wherebythe tubing and casing are held in a telescoped position and with saidvalve closing the tubing, said tubing being adapted to be disengagedfrom the releasable means, and the valve opened whereby a charge istaken into the bailer.

11. In a bailer the combination of a casing and a tubi. telescopicallymounted together, both having chambers therein, valve means adapted toengage and close the tubing, mounting means in the casing for the valvemeans, an air chamber a valve seated in the above the valve, a sandchamber below the valve I and automatic releasable means engaging thetube whereby saidtube and casing are held in a telescoped position withthe valve closed. l

12., In a bailer the combination of a easing and a tube telescopicallymounted together, a valve mounted withinthe casing, a sand chamber inthe casing with a bottom inlet below the valve, a pressure chamber inthe tube above the valve, means to open the valve on upward movement ofthe pressure chamber independent of the sand chamber, said valve seatingin the pressure chamber and closing the same in telescoped position ofthe n l bailer.

l ing a sand chamber-and a closed substantially. air

tight tube, telescopically mounted'in the casing, a valve mounted in thecasing between the sand chamber and thetube and adapted to' close thetube in the lowered position of the tube, means for lowering the bailerin a hole in a telescoped position with said tube closed by the valve, acheck valve in the casing, means to open the first named valve and meansto pull fluid into the bailer by reciprocating the tube independent ofthe casing.v

15. In a bailer the combination of a casing, a valve mounted within thecasing, a sand chamber in the casing below the valve, a tubetelescopically mounted in the casing above the valve, said valve beingadapted to close the tube, means to'open the valve by the upward motionof the tube independent of the sand chamber, the tube eiecting a pumpaction in the casing above the valve as the tube is raised.

16. In a bailer, the combination of the casing having a sand chamber inthe lower end thereof and a closed, substantially air-tight tubetelescopically mounted in the casing, a valve mounted in the casingbelow the tube, releasable means between the tube and the casing,whereby the tube and the casing are held in telescoped position lwhenlowering the bailer in a hole, said valve engaging and-closing the tubein the telescoped position of the bailer.

17. A bailer comprising a lower casing, an upper tubing telescopicallymounted in the casing, said casing and tube each having chamberstherein, a valve in the casing, a seat in the tubing against which thevalve bears, means releasably engaging the tubing whereby it is held inlowered position and with said valve closed, said tube being adapted tobe disengaged from the releasable means, and the valve opened whereby acharge is taken into the casing, a bailer bottom depending from thecasing, a valve chamber in the bailer bottom, an upwardly opening valvein the valve chamber, a tube rising from the valve chamber, a packinggland surrounding the last named tubing, cups above and below the valvechamber, said cups being mounted on the bailer bottom, a horizontal portextending thru the valve chamber and to the valve therein, a verticalport extending thru the valve chamber, and ports in the bailer bottomabove the uppermostv cups.

18. A bailer comprising a casing, said casing having a sand chambertherein, a tube, said tube having a sand chamber therein, a tubetelescopically mounted in the casing, said tube having a pressurechamber therein, a check valve in the tube, a pipe coupling means on thetube, a valve in the casing, a valve seat in the tube, said valveresting on the seat in collapsed position of the tube, releasable meansengaging the tube whereby the tube is held in collapsed position.

20. A bailer comprising a casing, said casing having a. sand chambertherein, a tube telescopically mounted in the casing, said tube having apressure chamber therein, a ,check valve in the tube, a pipe couplingmeans on the tube, 'a valve in the casing, a valve seat in the tube,said last mentioned valve resting on the seat in collapsed position ofthe tube, releasable means engaging the tube whereby the tube is held incollapsed position, a bailer bottom extending from the casing, spacedcups on the bailer bottom, a valve chamber' between the cups, anupwardly opening valve in the valve chamber, said valve chamber having atransverse port extending to the last mentioned valve, a tube risingfrom the valve chamber above the valve in said chamber, and a packinggland around the last named tube in the bailer bottom.

21. A bailer comprising a lower casing, an upper tubing telescopicallymounted in the casing, said casing and tube each having chamberstherein, a valve in the casing, a seat in the tubing against which thevalve bears, means releasably engaging the tubing whereby it is held inlowered position and with said valve closed, said tubing being adaptedto be disengaged from the releasable means, and the valve opened wherebya charge is taken into the casing, a bailer bottom depending from thecasing, spaced cups on the bailer bottom, a valve chamber between thecups, said valve chamber having a transverse bore therein and a verticalbore intersecting the transverse bore, an upwardly opening valve in thevertical bore, said last named valve being adapted to be unseated thruthe transverse bore, said valve chamber having by-pass ports extendingvertically therethru, outlet ports in the bailer bottom above the uppercups, a tube rising from the vertical bore, and a packing gland in thebailer bottom around the last named tube.

22. In a bailer having a lower sand chamber and an upper pressurechamber therein, valve means in the sand chamber, a valve seat thereforin the lower end of the pressure chamber, said valve means beingreleasable on'relative longitudinal movement of the pressure chamber andsand chamber, releasable means holding said chambers in telescopedposition and with the valve seated, and a circulation pipe extendingthru said pressure chamber and thru said valve means whereby circulatingfluid is conducted thru the pressure chamber.

23. A bailer comprising a lower casing having a sand chamber therein, anupper tubing having a pressure chamber therein, said tubing and casingbeing telescopically mounted, a valve in the casing, a seat in the tubeagainst which the valve bears, a means releasably engaging the tubingwhereby said tubing is held in lowered position with the valve closed,and a circulation pipe extending thru the pressure chamber and thru saidvalve whereby circulating uid is conducted thru the pressure chamber.

24. A bailer comprising a lower casing having a sand chamber therein, anupper tubing having a pressure chamber therein, said tubing and casingbeing telescopically mounted, a valve in the casing, a seat on thetubing against which the valve bears, a means releasably engaging thetubing whereb'y said tubing is held in lowered position with the valveclosed, a circulation lpipe extending thru the pressure chamber and thrusaid valve whereby circulating uid is conducted thru the pressurechamber, and a packing means around the circulation pipe above thepressure chamber.

EDGAR D. KEELER.

